How to append and write a .xls file with JRXlsExporter

[vintila_2005]

I use JRXlsExporter to write my .xls files it works ok as long as I write in a new file every time, my problem is that i want to append an existing .xls file and add new data to the end of that file.

public static void exportXLS(JasperPrint jasperPrint, String fileName) throws IOException, JRException{        SimpleXlsReportConfiguration configuration = new SimpleXlsReportConfiguration();        configuration.setOnePagePerSheet(true);        configuration.setDetectCellType(true);        configuration.setCollapseRowSpan(false);        configuration.setWhitePageBackground(false);               File file = new File(fileName+".xls");        FileOutputStream fos = new FileOutputStream(file,true);               JRXlsExporter exporterXLS = new JRXlsExporter();        exporterXLS.setExporterInput(new SimpleExporterInput(jasperPrint));        exporterXLS.setExporterOutput(new SimpleOutputStreamExporterOutput(fos));        exporterXLS.setConfiguration(configuration);        exporterXLS.exportReport();               fos.flush();        fos.close()  }                                                                                                                                                                                                         [/code]

[marianol]

Check this Sample, is comes with JR so you should have it under /demo/samples/xlsfeatures/

http://jasperreports.sourceforge.net/sample.reference/xlsfeatures/#xlsfeatures

You need to use the net.sf.jasperreports.export.xls.workbook.template property See the section "Embedding Content From External Documents Into The Generated Document "